An image heating apparatus includes a pressure removal mechanism including a camshaft, first and second cam portions being capable of placing a pressing mechanism at a first position, in which first and second rotatable members form the nip, and a second position, in which the pressing mechanism is moved against an urging force provided by a pressing spring at the first position, a first bearing portion, a second bearing portion, a first supporting portion supporting the first bearing portion, a second supporting portion supporting the first bearing portion, a driving mechanism configured to rotate the camshaft, and a regulating portion configured to regulate flexure of the camshaft by contacting the camshaft at a position between the first bearing portion and the second bearing portion with respect to the longitudinal direction of the camshaft, when the pressing mechanism is in the second position.